Window sash lock



Feb. 9, 1943. H. PHILIPSBERG F WINDOW SASH LOCK Filed Jan. 22, 1942 INVENTORI HE/VRK P/IlL/PJBEIG.

FIG. 4.

Patented Feb. 9, 1943 UNH'EE TATE 2 Claims.

This invention relates to window sashes, more particularly slidable sashes, weight counter-balanced and movable in grooved frames, and having pivoted portions.

One of the objects of the invention is to provide means adapted to positively lock an upper and lower sash when in a closed position, from Within the window in which they are set.

Another purpose is to produce a sash com posed of a fixed frame containing an inner, vertically pivoted frame carrying a transparent pane.

A further feature is in the provision of a novel, key operated, spring pressed control device for the pivoted sash locking means.

These advantageous objects are attained by the novel construction, arrangement and combination of parts, hereinafter described and shown in the accompanying drawing, forming part of this disclosure, and in which:

Figure 1 is a perspective View of an embodiment of the invention, both sashes being in a fully closed position.

Figure 2 is a similar view of the same, but showing the inner sash frames turned at an angle on their vertical axes.

Figure 3 is a plan view of the locking means as applied to the outer frame of the upper sash.

Figure 4 is a similar view of the co-operative locking means carried by the outer frame of the lower sash.

Figure 5 is a longitudinal sectional view looking on line 5-5 of Figure 1.

Figure 6 is a similar View of the same, parts being in a different position.

Figure 7 is a side elevational view of a pivot pin carried by the upper sash.

Figure 8 is a plan View of the head of the pin shown in Figure 7.

In the drawing, the numeral H] designates in general, the rigid outer frame of the lower sash and II the mating frame of the upper, outer sash.

Both frames are plainly rectangular, their side members having grooves in their outer surfaces for receiving flexible connections attached to counterweights in the customary manner.

Set in a recess in the lower member of the upon sash frame II, is a skeleton casing l2, while a similar casing I 3 is set in the upper member of the lower sash frame It.

A pair of inner sashes l4 and I5 are pivoted respectively in the main frames l and H, to turn therewithin, on vertical axes, these inner sashes being provided with transparent panes i and H.

The pivot 32 of the upper, turnable frame i5 is provided with a fixed head 31 and a socket 33 having a square opening to engage a square stem [8 rotatably mounted on a vertical axis in the casing I2, and fixed on the inner portion of the stem is a spur pinion i9, which obviously will be turned when the sash frame 15 is turned.

Rigidly extending inwardly, from both sides of the casing, are spaced pairs of lug 2%, each pair being connected by studs 2! on which are slidably mounted bars 22 fixed at their inner ends to a worm 23, pressed normally away from the pinion !9 by reason of compression springs 24 encircling the studs 2!, as indicated in Figure 3.

At the opposite side of the worm 23 and slightly below it axis, are sleeves 25, fixed to extend inwardly from the sides of the casing i2, and journalled therein is a spindle 25 to which is secured a plate 21 adapted to Contact the worm 23 and press it into engagement with the pinion IS, in the manner of a detent, preventing it from turning, thus locking the sash I1 against rotation, until the plate is removed by rotation of the spindle 26.

In the outer end of the spindle 26 is a square recess 28, adapted to receive a tang 29 on the extending end of a spindle 26, mounted slidably and rotatably in the casing l3, and having at its opposite outer end, a keylike handle 3!] adapted for manual operation.

As the remaining elements in the casing [3 are substantially identical with those hereinbefore described and operate in a like manner they are given prime numbers corresponding to the parts in Figure 3 to avoid useless repetition.

It is to be understood that the casings l2 and 13 are arranged in close proximity on the respective inner sashes, and that both may be simultaneously locked or released for rotary movement when desired.

Having thus described the invention and set forth the manner of its construction and application, what is claimed as new and sought to secure by Letters Patent, is:

1. In a window having a slidable sash frame, a sash pivoted at its top and bottom rail in said frame, at least one of said sash pivots being rigidly secured in its rail and having a rectangular socket in its outer end, a casing having a stem rotatably mounted therein, said stem being engag-eable in said socket, a spur pinion fixed on said stem, a worm movable to engage said pinion, and manual means to move said worm relative to said pinion.

2. In a window having a slidable sash frame, a sash pivoted at its top and bottom rail in said frame, at least one of said sash pivots being rigidly secured in its rail and having a rectangular socket in its outer end, a casing having a stem ro-tatably mounted therein, said stem being engageable in said socket, a spur pinion fixed on said stem, a worm movable laterally to engage said pinion, and manual means to engage said worm with said pinion.

HENRY PHILIPSBERG. 

